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Maddie MOD1
Terrain LFO
LFO · Wavetable
A procedurally generated triple-wavetable LFO with probabilistic SloMo 'breaths'.
- Width
- 4 HP
- Depth
- 28 mm
- Power
- +12V
- MCU
- Arduino Nano
- Controls
- 3 pots · button · LED
- I/O
- 4× 0–5V jacks
Overview
Terrain LFO generates three independent wavetables (“terrains”) at the press of a button. Each is built under musical constraints — seamless looping, at least one zero crossing, nonlinear knot spacing, a rest after each spike. The three outputs are slightly detuned from one another (×0.9, ×1.0, ×1.1) for chorused motion, and a probabilistic SloMo mode randomly slows each terrain for a short, tempo-scaled “breath.”
Panel & I/O
| Control | Pin | Function |
|---|---|---|
| POT1 | A0 | Speed — base speed (0.01–5 Hz) |
| POT2 | A1 | SloMo — slow-down probability |
| POT3 | A2 | Knots — knots per waveform (3–12) |
| BTN | D4 | Generate new waveforms |
| LED | D3 | Blinks during generation |
| F1 | A3 | In — Speed offset CV (0–1 Hz) |
| F2 | D9 | Out — Terrain 1 (×0.9) |
| F3 | D10 | Out — Terrain 2 (×1.0) |
| F4 | D11 | Out — Terrain 3 (×1.1) |
Features
- Three procedurally generated, musically constrained wavetables
- Per-channel detuning for rich, chorused modulation
- Probabilistic SloMo “breathing” per terrain
- CV speed offset and on-demand regeneration
© 2026 Maddie Synths · firmware based on work by Rob Heel · original firmware CC0 1.0 · hardware design by Hagiwo